| 单词 | polar nucleus |
| 释义 | polar nucleusnounBotany. either of two female haploid nuclei, in the embryo sac of flowers, that fuse to produce a diploid nucleus, which combines with a male nucleus to form the endosperm. Origin of polar nucleusFirst recorded in 1880–85 Words nearby polar nucleuspolarizer, polarizing filter, polarizing microscope, polar lights, polar molecule, polar nucleus, polarogram, Polarograph, polarography, Polaroid, polar opposition Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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